Stability of radicals in electron-irradiated fluoropolymer film for the preparation of graft copolymer fuel cell electrolyte membranes

Mikkel Juul Larsen, Yue Ma, Huan Qian, Hans Toftlund Nielsen, Peter Brilner Lund, Eivind Morten Skou

Publikation: Konferencebidrag uden forlag/tidsskriftPosterForskning

Resumé

This presentation concerns the stability of radicals generated in poly(ethylene-alt-tetra­fluoro­ethylene) (ETFE) film by electron irradiation prior to grafting of styrene onto this base material. It has been demonstrated that the grafting yield decreases as the storage time of the irradiated film increases, and by ESR this has been shown to be due to decay of the polymerization-initiating radicals in the film material. The decay rate is found to depend on the storage temperature, and it may also depend on the type of radicals present in the film. Furthermore the conducted investigations have shown that the radicals are almost entirely consumed in the grafting process.
OriginalsprogEngelsk
Publikationsdato2008
Antal sider1
StatusUdgivet - 2008
Begivenhed14th International Conference on Solid State Protonic Conductors - Kyoto, Japan
Varighed: 7. sep. 200811. okt. 2008
Konferencens nummer: 14

Konference

Konference14th International Conference on Solid State Protonic Conductors
Nummer14
LandJapan
ByKyoto
Periode07/09/200811/10/2008

Fingeraftryk

fluoropolymers
fuel cells
copolymers
electrolytes
membranes
preparation
electrons
electron irradiation
styrenes
decay rates
ethylene
polymerization
decay
temperature

Emneord

  • Radikaler, peroxyradikaler, radikalstabilitet, radikallevetid, ESR, EPR, elektronbestråling, fluorpolymer, brændselscelle, membran, podning, polystyren

Citer dette

Larsen, M. J., Ma, Y., Qian, H., Nielsen, H. T., Lund, P. B., & Skou, E. M. (2008). Stability of radicals in electron-irradiated fluoropolymer film for the preparation of graft copolymer fuel cell electrolyte membranes. Poster session præsenteret på 14th International Conference on Solid State Protonic Conductors, Kyoto, Japan.
Larsen, Mikkel Juul ; Ma, Yue ; Qian, Huan ; Nielsen, Hans Toftlund ; Lund, Peter Brilner ; Skou, Eivind Morten. / Stability of radicals in electron-irradiated fluoropolymer film for the preparation of graft copolymer fuel cell electrolyte membranes. Poster session præsenteret på 14th International Conference on Solid State Protonic Conductors, Kyoto, Japan.1 s.
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title = "Stability of radicals in electron-irradiated fluoropolymer film for the preparation of graft copolymer fuel cell electrolyte membranes",
abstract = "This presentation concerns the stability of radicals generated in poly(ethylene-alt-tetra­fluoro­ethylene) (ETFE) film by electron irradiation prior to grafting of styrene onto this base material. It has been demonstrated that the grafting yield decreases as the storage time of the irradiated film increases, and by ESR this has been shown to be due to decay of the polymerization-initiating radicals in the film material. The decay rate is found to depend on the storage temperature, and it may also depend on the type of radicals present in the film. Furthermore the conducted investigations have shown that the radicals are almost entirely consumed in the grafting process.",
keywords = "Radikaler, peroxyradikaler, radikalstabilitet, radikallevetid, ESR, EPR, elektronbestr{\aa}ling, fluorpolymer, br{\ae}ndselscelle, membran, podning, polystyren, Radicals, peroxy radicals, radical stability, radical lifetime, ESR, EPR, electron irradiation, fluoropolymer, fuel cell, membrane, grafting, polystyrene",
author = "Larsen, {Mikkel Juul} and Yue Ma and Huan Qian and Nielsen, {Hans Toftlund} and Lund, {Peter Brilner} and Skou, {Eivind Morten}",
year = "2008",
language = "English",
note = "null ; Conference date: 07-09-2008 Through 11-10-2008",

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Larsen, MJ, Ma, Y, Qian, H, Nielsen, HT, Lund, PB & Skou, EM 2008, 'Stability of radicals in electron-irradiated fluoropolymer film for the preparation of graft copolymer fuel cell electrolyte membranes' 14th International Conference on Solid State Protonic Conductors, Kyoto, Japan, 07/09/2008 - 11/10/2008, .

Stability of radicals in electron-irradiated fluoropolymer film for the preparation of graft copolymer fuel cell electrolyte membranes. / Larsen, Mikkel Juul; Ma, Yue; Qian, Huan; Nielsen, Hans Toftlund; Lund, Peter Brilner; Skou, Eivind Morten.

2008. Poster session præsenteret på 14th International Conference on Solid State Protonic Conductors, Kyoto, Japan.

Publikation: Konferencebidrag uden forlag/tidsskriftPosterForskning

TY - CONF

T1 - Stability of radicals in electron-irradiated fluoropolymer film for the preparation of graft copolymer fuel cell electrolyte membranes

AU - Larsen, Mikkel Juul

AU - Ma, Yue

AU - Qian, Huan

AU - Nielsen, Hans Toftlund

AU - Lund, Peter Brilner

AU - Skou, Eivind Morten

PY - 2008

Y1 - 2008

N2 - This presentation concerns the stability of radicals generated in poly(ethylene-alt-tetra­fluoro­ethylene) (ETFE) film by electron irradiation prior to grafting of styrene onto this base material. It has been demonstrated that the grafting yield decreases as the storage time of the irradiated film increases, and by ESR this has been shown to be due to decay of the polymerization-initiating radicals in the film material. The decay rate is found to depend on the storage temperature, and it may also depend on the type of radicals present in the film. Furthermore the conducted investigations have shown that the radicals are almost entirely consumed in the grafting process.

AB - This presentation concerns the stability of radicals generated in poly(ethylene-alt-tetra­fluoro­ethylene) (ETFE) film by electron irradiation prior to grafting of styrene onto this base material. It has been demonstrated that the grafting yield decreases as the storage time of the irradiated film increases, and by ESR this has been shown to be due to decay of the polymerization-initiating radicals in the film material. The decay rate is found to depend on the storage temperature, and it may also depend on the type of radicals present in the film. Furthermore the conducted investigations have shown that the radicals are almost entirely consumed in the grafting process.

KW - Radikaler, peroxyradikaler, radikalstabilitet, radikallevetid, ESR, EPR, elektronbestråling, fluorpolymer, brændselscelle, membran, podning, polystyren

KW - Radicals, peroxy radicals, radical stability, radical lifetime, ESR, EPR, electron irradiation, fluoropolymer, fuel cell, membrane, grafting, polystyrene

M3 - Poster

ER -

Larsen MJ, Ma Y, Qian H, Nielsen HT, Lund PB, Skou EM. Stability of radicals in electron-irradiated fluoropolymer film for the preparation of graft copolymer fuel cell electrolyte membranes. 2008. Poster session præsenteret på 14th International Conference on Solid State Protonic Conductors, Kyoto, Japan.